Keyboard Backlight Support

Alex Murray murray.alex at gmail.com
Thu Sep 30 04:00:52 PDT 2010


Hi all,

I recently sent an email to the g-p-m list inquiring about keyboard
backlight support in g-p-m / UPower / udev - I know this used to be
supported but in the deprecation of HAL it seems to have gotten
lost...

So was wondering what would be the best way to go about reimplementing
support for handling keyboard backlights with the new UPower + udev
stack?

Now-a-days (under Linux) the couple keyboard backlights which I've
come across seem to use the kernel's leds interface and so appear as
/sys/class/leds/????::kbd_backlight/ - (the applesmc driver for
MacBook's and the Asus laptop platform driver both use such an
interface) so could this provide an easy way to provide support for
both such platforms?

Any pointers as to what functionality should go where and how best to
go about doing it would definitely be appreciated as I'm keen to try
and get this working again, although I have little experience with
udev / UPower so any pointers as to how to develop the best overall
solution would be great.

Cheers
Alex


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